A model is proposed that associates the impact of computer technology on a job, with the set of underlying characteristics that describe the activities performed on the job. An empirical test of the model has been undertaken. One thousand and thirty-five experts assessed the impact of computer technology that they believed would occur on 306 jobs over a three-year period. Job characteristics data was obtained from prior analyses of the jobs, using the Position Analysis Questionnaire (PAQ). Six job dimensions derived from analysis PAQ data were significant predictors of the technological impact ratings provided by the experts: engaging in physical activities; being aware of the work environment; performing clerical-related functions; working in an unpleasant or hazardous environment; performing service-related activities; and performing supervising, directing, and estimating functions.